I already had this problem... This was not a problem of 0 time, But because you put too much pathnode.

If during the map will have one corridor, avoid putting much pathnodes, put in a long corridor to 2-3 pathnodes.
Try reducing the numbers of pathnodes, It's about what I did and my problem was resolved
Infact, the monster every Pathnode, it stops for about 1 second, it's automatic

I already had this problem... This was not a problem of 0 time, But because you put too much pathnode.

If during the map will have one corridor, avoid putting much pathnodes, put in a long corridor to 2-3 pathnodes.
Try reducing the numbers of pathnodes, It's about what I did and my problem was resolved
Infact, the monster every Pathnode, it stops for about 1 second, it's automatic